143304381 has 24 divisors (see below), whose sum is σ = 226402176. Its totient is φ = 86624640.

The previous prime is 143304349. The next prime is 143304383. The reversal of 143304381 is 183403341.

143304381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 143304381 - 2⁵ = 143304349 is a prime.

It is a super-2 number, since 2×143304381² = 41072291227586322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143304383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41196 + ... + 44538.

It is an arithmetic number, because the mean of its divisors is an integer number (9433424).

Almost surely, 2^143304381 is an apocalyptic number.

143304381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

143304381 is a deficient number, since it is larger than the sum of its proper divisors (83097795).

143304381 is a wasteful number, since it uses less digits than its factorization.

143304381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3793 (or 3790 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 143304381 is about 11970.9807868863. The cubic root of 143304381 is about 523.3029173049.

The spelling of 143304381 in words is "one hundred forty-three million, three hundred four thousand, three hundred eighty-one".